Alaska Airlines Mileage Plan is currently offering double award miles on select flights.
In order to receive the bonus you must register before taking your first qualifying flight.
Qualifying flights are those completed between February 15, 2015 and May 15, 2015. You cannot earn miles on free or award travel flights. The double award miles will not count towards Alaska Airlines Mileage Plan Elite Status.
The following flight routes are eligible for the double miles bonus.
Between Salt Lake City and:
Boise (BOI), Las Vegas (LAS), Los Angeles (LAX), Portland (PDX), San Diego (SAN), San Francisco (SFO), San Jose (SJC), or Seattle (SEA)
Between Seattle and:
Anchorage (ANC), Atlanta (ATL), Boise (BOI), Calgary (YYC), Detroit (DTW),Honolulu (HNL), Los Angeles (LAX), Las Vegas (LAS), Los Cabos (SJD), Maui (OGG), Minneapolis (MSP), Phoenix (PHX), Sacramento (SMF), San Diego (SAN), San Francisco (SFO), San Jose (SJC), Spokane (GEG), Tucson (TUS), or Vancouver (YVR)
Alaska Airlines is also offering a double award miles bonus on their newly announced route of daily nonstop service which will begin March 11, 2015, between Seattle and Washington Dulles.
Alaska Airlines Mileage Plan members can earn double Miles between Seattle (SEA) and Washington Dulles (IAD) for travel March 11, 2015, through April 22, 2015. For this bonus your must register before March 18, 2015, and prior to your first qualifying flight.
If you are not already an Alaska Airlines Mileage Plan member you can enroll here.